Sapphires, or corundum, are graded 9 on this scale, and are thus very resistant to scratching and chipping and ideal for use in jewellery, particularly jewellery such as engagement and wedding rings that are worn daily. Treatments of gemstones should be declared by the seller at all times.ĭiamonds are the hardest substance on earth, graded 10 on the Moh’s Hardness Scale. Some treatments are used in almost all cases and are therefore considered acceptable. Improving the quality of gemstones by treating them is common practice. Sapphires of lighter hues or less intense colour can be heat treated to achieve more intense colours, and can often be a very affordable option for jewellery. Deeply coloured natural sapphires are the most valuable of all sapphires. The value of sapphires comes from the intensity of their colour and clarity.

Sometimes, two of these colours can be visible in one stone creating a variety known as Parti sapphires. Rubies are red corundum, and all other corundum, from pink and green to yellow and blue, are known as sapphires. Blue sapphires are actually part of the larger corundum family, a type of crystal that also includes the gemstone Ruby. It’s important to note that blue is not your only option when purchasing a sapphire. The most well known type of sapphire is the blue sapphire, which can range in colour from deep royal blue (known as Australian Blue) to light periwinkle shades. Sapphires offer a rainbow of colour options and due to their hardness and wearability, are ideal for use in fine jewellery. Workshop Experience: Make Your Own Wedding Rings.

Sapphire wedding rings